The correct option is B Torpedo
Torpedo has a pair of electric organs that can generate an electrical potential of 20 to 50 volts. Fishermen have reported having received electric shocks while handling this fish.
Trygon belongs to the family of sting rays although it does not have electric organs. It has a tail bearing a spine which wounds the victim.
Pristis have a shark-like body, a flat underside and a flat head with a rough sandpaper-like skin texture. They are found in shallow coastal waters.
Betta fish live in the shallow water of marshes, ponds, or slow-moving streams. They have the unique ability to breathe oxygen directly from the air and also take in oxygen from its gills.